Search code examples
c#xmlteststand

Accessing XML data from C#


I'm struggling with accessing to the data stored in the XML file from C#. I read a lot of posts - the closest one was here - but still can't get it working.

The xml node looks like below:

<Prop Name='StartTime' Type='Number' Flags='0x0'>
<Value>171.8032865</Value>
</Prop>

I need to know what is the value of the property named 'StartTime'

EDIT: The node above is a one of the many in the xml document. And it is nested amongst other nodes. I need to find ALL values of the property with the name 'StartTime'.

I use XAML.

EDIT2: I think it'll better if I display bigger chunk of the xml I have to get the data from. It looks like Kaz's solution is the closest the demanded solution, but it fails if I load whole xml.

XML file:

<Prop Type='TEResult' Flags='0x0'>
<Prop Name='TS' Type='Obj' Flags='0x0'>
    <Prop Name='SequenceCall' Type='Obj' Flags='0x0'>
        <Prop Name='ResultList' Type='Array' LBound='[0]' HBound='[3]' ElementType='Obj' Flags='0x0'>
            <ArrayElementPrototype Type='TEResult' Flags='0x0'>
            </ArrayElementPrototype>
            <Value ID='[0]'>
                <Prop Type='TEResult' Flags='0x0'>
                    <Prop Name='Error' Type='Obj' TypeName='Error' Flags='0x400000'>
                        <Prop Name='Code' Type='Number' Flags='0x400000'>
                            <Value>0</Value>
                        </Prop>
                        <Prop Name='Msg' Type='String' Flags='0x400000'>
                            <Value></Value>
                        </Prop>
                        <Prop Name='Occurred' Type='Boolean' Flags='0x400000'>
                            <Value>False</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='Status' Type='String' Flags='0x400000'>
                        <Value>Failed</Value>
                    </Prop>
                    <Prop Name='Numeric' Type='Number' Flags='0x2400'>
                        <Value>0</Value>
                    </Prop>
                    <Prop Name='ReportText' Type='String' Flags='0x400000'>
                        <Value></Value>
                    </Prop>
                    <Prop Name='Common' Type='Obj' TypeName='CommonResults' Flags='0x0'>
                        <Prop Name='IncludeInReport' Type='Boolean' Flags='0x0'>
                            <Value>True</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='TS' Type='Obj' Flags='0x0'>
                        <Prop Name='StartTime' Type='Number' Flags='0x0'>
                            <Value>171.8032865</Value>
                        </Prop>
                        <Prop Name='TotalTime' Type='Number' Flags='0x0'>
                            <Value>0.0005158</Value>
                        </Prop>
                        <Prop Name='Index' Type='Number' Flags='0x0'>
                            <Value>0</Value>
                        </Prop>
                        <Prop Name='StepName' Type='String' Flags='0x0'>
                            <Value>Test 1</Value>
                        </Prop>
                        <Prop Name='StepGroup' Type='String' Flags='0x0'>
                            <Value>Main</Value>
                        </Prop>
                        <Prop Name='StepId' Type='String' Flags='0x0'>
                            <Value>ID#:TbZA+59stkivP1pqe//sUB</Value>
                        </Prop>
                        <Prop Name='Id' Type='Number' Flags='0x0'>
                            <Value>5</Value>
                        </Prop>
                        <Prop Name='StepType' Type='String' Flags='0x0'>
                            <Value>NumericLimitTest</Value>
                        </Prop>
                        <Prop Name='StepCausedSequenceFailure' Type='Boolean' Flags='0x0'>
                            <Value>True</Value>
                        </Prop>
                        <Prop Name='BlockLevel' Type='Number' Flags='0x0'>
                            <Value>0</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='Limits' Type='Obj' Flags='0x3000'>
                        <Prop Name='Low' Type='Number' Flags='0x0'>
                            <Value>9</Value>
                        </Prop>
                        <Prop Name='High' Type='Number' Flags='0x0'>
                            <Value>11</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='Comp' Type='String' Flags='0x3000'>
                        <Value>GELE</Value>
                    </Prop>
                </Prop>
            </Value>
            <Value ID='[1]'>
                <Prop Type='TEResult' Flags='0x0'>
                    <Prop Name='Error' Type='Obj' TypeName='Error' Flags='0x400000'>
                        <Prop Name='Code' Type='Number' Flags='0x400000'>
                            <Value>0</Value>
                        </Prop>
                        <Prop Name='Msg' Type='String' Flags='0x400000'>
                            <Value></Value>
                        </Prop>
                        <Prop Name='Occurred' Type='Boolean' Flags='0x400000'>
                            <Value>False</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='Status' Type='String' Flags='0x400000'>
                        <Value>Failed</Value>
                    </Prop>
                    <Prop Name='Numeric' Type='Number' Flags='0x2400'>
                        <Value>0</Value>
                    </Prop>
                    <Prop Name='ReportText' Type='String' Flags='0x400000'>
                        <Value></Value>
                    </Prop>
                    <Prop Name='Common' Type='Obj' TypeName='CommonResults' Flags='0x0'>
                        <Prop Name='IncludeInReport' Type='Boolean' Flags='0x0'>
                            <Value>True</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='TS' Type='Obj' Flags='0x0'>
                        <Prop Name='StartTime' Type='Number' Flags='0x0'>
                            <Value>171.8135159</Value>
                        </Prop>
                        <Prop Name='TotalTime' Type='Number' Flags='0x0'>
                            <Value>0.0000802</Value>
                        </Prop>
                        <Prop Name='Index' Type='Number' Flags='0x0'>
                            <Value>1</Value>
                        </Prop>
                        <Prop Name='StepName' Type='String' Flags='0x0'>
                            <Value>Test 2</Value>
                        </Prop>
                        <Prop Name='StepGroup' Type='String' Flags='0x0'>
                            <Value>Main</Value>
                        </Prop>
                        <Prop Name='StepId' Type='String' Flags='0x0'>
                            <Value>ID#:7RheSM0MDEGTAnRrrfGNcB</Value>
                        </Prop>
                        <Prop Name='Id' Type='Number' Flags='0x0'>
                            <Value>6</Value>
                        </Prop>
                        <Prop Name='StepType' Type='String' Flags='0x0'>
                            <Value>NumericLimitTest</Value>
                        </Prop>
                        <Prop Name='StepCausedSequenceFailure' Type='Boolean' Flags='0x0'>
                            <Value>False</Value>
                        </Prop>
                        <Prop Name='BlockLevel' Type='Number' Flags='0x0'>
                            <Value>0</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='Limits' Type='Obj' Flags='0x3000'>
                        <Prop Name='Low' Type='Number' Flags='0x0'>
                            <Value>9</Value>
                        </Prop>
                        <Prop Name='High' Type='Number' Flags='0x0'>
                            <Value>11</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='Comp' Type='String' Flags='0x3000'>
                        <Value>GELE</Value>
                    </Prop>
                </Prop>
            </Value>
            <Value ID='[2]'>
                <Prop Type='TEResult' Flags='0x0'>
                    <Prop Name='Error' Type='Obj' TypeName='Error' Flags='0x400000'>
                        <Prop Name='Code' Type='Number' Flags='0x400000'>
                            <Value>0</Value>
                        </Prop>
                        <Prop Name='Msg' Type='String' Flags='0x400000'>
                            <Value></Value>
                        </Prop>
                        <Prop Name='Occurred' Type='Boolean' Flags='0x400000'>
                            <Value>False</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='Status' Type='String' Flags='0x400000'>
                        <Value>Failed</Value>
                    </Prop>
                    <Prop Name='Numeric' Type='Number' Flags='0x2400'>
                        <Value>0</Value>
                    </Prop>
                    <Prop Name='ReportText' Type='String' Flags='0x400000'>
                        <Value></Value>
                    </Prop>
                    <Prop Name='Common' Type='Obj' TypeName='CommonResults' Flags='0x0'>
                        <Prop Name='IncludeInReport' Type='Boolean' Flags='0x0'>
                            <Value>True</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='TS' Type='Obj' Flags='0x0'>
                        <Prop Name='StartTime' Type='Number' Flags='0x0'>
                            <Value>171.8240739</Value>
                        </Prop>
                        <Prop Name='TotalTime' Type='Number' Flags='0x0'>
                            <Value>0.000081</Value>
                        </Prop>
                        <Prop Name='Index' Type='Number' Flags='0x0'>
                            <Value>2</Value>
                        </Prop>
                        <Prop Name='StepName' Type='String' Flags='0x0'>
                            <Value>Test 3</Value>
                        </Prop>
                        <Prop Name='StepGroup' Type='String' Flags='0x0'>
                            <Value>Main</Value>
                        </Prop>
                        <Prop Name='StepId' Type='String' Flags='0x0'>
                            <Value>ID#:pWFWDejvo0GThcOYVssHBA</Value>
                        </Prop>
                        <Prop Name='Id' Type='Number' Flags='0x0'>
                            <Value>7</Value>
                        </Prop>
                        <Prop Name='StepType' Type='String' Flags='0x0'>
                            <Value>NumericLimitTest</Value>
                        </Prop>
                        <Prop Name='StepCausedSequenceFailure' Type='Boolean' Flags='0x0'>
                            <Value>False</Value>
                        </Prop>
                        <Prop Name='BlockLevel' Type='Number' Flags='0x0'>
                            <Value>0</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='Limits' Type='Obj' Flags='0x3000'>
                        <Prop Name='Low' Type='Number' Flags='0x0'>
                            <Value>9</Value>
                        </Prop>
                        <Prop Name='High' Type='Number' Flags='0x0'>
                            <Value>11</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='Comp' Type='String' Flags='0x3000'>
                        <Value>GELE</Value>
                    </Prop>
                </Prop>
            </Value>
            <Value ID='[3]'>
                <Prop Type='TEResult' Flags='0x0'>
                    <Prop Name='Error' Type='Obj' TypeName='Error' Flags='0x400000'>
                        <Prop Name='Code' Type='Number' Flags='0x400000'>
                            <Value>0</Value>
                        </Prop>
                        <Prop Name='Msg' Type='String' Flags='0x400000'>
                            <Value></Value>
                        </Prop>
                        <Prop Name='Occurred' Type='Boolean' Flags='0x400000'>
                            <Value>False</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='Status' Type='String' Flags='0x400000'>
                        <Value>Failed</Value>
                    </Prop>
                    <Prop Name='Numeric' Type='Number' Flags='0x2400'>
                        <Value>0</Value>
                    </Prop>
                    <Prop Name='ReportText' Type='String' Flags='0x400000'>
                        <Value></Value>
                    </Prop>
                    <Prop Name='Common' Type='Obj' TypeName='CommonResults' Flags='0x0'>
                        <Prop Name='IncludeInReport' Type='Boolean' Flags='0x0'>
                            <Value>True</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='TS' Type='Obj' Flags='0x0'>
                        <Prop Name='StartTime' Type='Number' Flags='0x0'>
                            <Value>171.8270851</Value>
                        </Prop>
                        <Prop Name='TotalTime' Type='Number' Flags='0x0'>
                            <Value>0.0001041</Value>
                        </Prop>
                        <Prop Name='Index' Type='Number' Flags='0x0'>
                            <Value>3</Value>
                        </Prop>
                        <Prop Name='StepName' Type='String' Flags='0x0'>
                            <Value>Test 4</Value>
                        </Prop>
                        <Prop Name='StepGroup' Type='String' Flags='0x0'>
                            <Value>Main</Value>
                        </Prop>
                        <Prop Name='StepId' Type='String' Flags='0x0'>
                            <Value>ID#:w+ziJ/u2bkWz+F3kWa4mpC</Value>
                        </Prop>
                        <Prop Name='Id' Type='Number' Flags='0x0'>
                            <Value>8</Value>
                        </Prop>
                        <Prop Name='StepType' Type='String' Flags='0x0'>
                            <Value>NumericLimitTest</Value>
                        </Prop>
                        <Prop Name='StepCausedSequenceFailure' Type='Boolean' Flags='0x0'>
                            <Value>False</Value>
                        </Prop>
                        <Prop Name='BlockLevel' Type='Number' Flags='0x0'>
                            <Value>0</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='Limits' Type='Obj' Flags='0x3000'>
                        <Prop Name='Low' Type='Number' Flags='0x0'>
                            <Value>9</Value>
                        </Prop>
                        <Prop Name='High' Type='Number' Flags='0x0'>
                            <Value>11</Value>
                        </Prop>
                    </Prop>
                    <Prop Name='Comp' Type='String' Flags='0x3000'>
                        <Value>GELE</Value>
                    </Prop>
                </Prop>
            </Value>
        </Prop>
        <Prop Name='SequenceFile' Type='String' Flags='0x0'>
            <Value>C:\Users\Public\Documents\National Instruments\TestStand 2010 SP1\Sequence File 16.seq</Value>
        </Prop>
        <Prop Name='Sequence' Type='String' Flags='0x0'>
            <Value>MainSequence</Value>
        </Prop>
        <Prop Name='Status' Type='String' Flags='0x0'>
            <Value>Failed</Value>
        </Prop>
    </Prop>
    <Prop Name='StartTime' Type='Number' Flags='0x0'>
        <Value>171.6948629</Value>
    </Prop>
    <Prop Name='TotalTime' Type='Number' Flags='0x0'>
        <Value>0.1359434</Value>
    </Prop>
    <Prop Name='ModuleTime' Type='Number' Flags='0x0'>
        <Value>0.1357157</Value>
    </Prop>
    <Prop Name='Index' Type='Number' Flags='0x0'>
        <Value>31</Value>
    </Prop>
    <Prop Name='StepName' Type='String' Flags='0x0'>
        <Value>MainSequence Callback</Value>
    </Prop>
    <Prop Name='StepGroup' Type='String' Flags='0x0'>
        <Value>Main</Value>
    </Prop>
    <Prop Name='StepId' Type='String' Flags='0x0'>
        <Value>ID#:xnW0PT0ORE2el7wF7uaxyB</Value>
    </Prop>
    <Prop Name='Id' Type='Number' Flags='0x0'>
        <Value>4</Value>
    </Prop>
    <Prop Name='StepType' Type='String' Flags='0x0'>
        <Value>SequenceCall</Value>
    </Prop>
    <Prop Name='BlockLevel' Type='Number' Flags='0x0'>
        <Value>0</Value>
    </Prop>
    <Prop Name='SequenceFilePostResultListEntry' Type='Obj' Flags='0x0'>
        <Prop Name='ResultList' Type='Array' LBound='[0]' HBound='[]' ElementType='Obj' Flags='0x0'>
            <ArrayElementPrototype Type='TEResult' Flags='0x0'>
            </ArrayElementPrototype>
        </Prop>
        <Prop Name='SequenceFile' Type='String' Flags='0x0'>
            <Value>C:\Program Files\National Instruments\TestStand 2010 SP1\Components\Models\TestStandModels\SequentialModel.seq</Value>
        </Prop>
        <Prop Name='Sequence' Type='String' Flags='0x0'>
            <Value>SequenceFilePostResultListEntry</Value>
        </Prop>
        <Prop Name='Status' Type='String' Flags='0x0'>
            <Value>Passed</Value>
        </Prop>
    </Prop>
</Prop>

Solution

  • Ok....after getting the whole xml...

        XDocument xmlDoc = XDocument.Load(@"Your file path");
    
        var startTimes = xmlDoc.Descendants()
            .Where(x => x.Attributes().Any(att => att.Name == "Name" && att.Value == "StartTime"))
            .Select(x => x.Value).ToList();
    

    This gives me a list containing the values:

    • "171.6948629"
    • "171.8032865"
    • "171.8135159"
    • "171.8240739"
    • "171.8270851"

    This feels more like what you're looking for.